SynthRx to become wholly-owned subsidiary of ADVENTRX

ADVENTRX Pharmaceuticals, Inc. (NYSE Amex: ANX) today announced that it has entered into a definitive agreement to acquire SynthRx, Inc. (SynthRx), a private biotechnology company developing a purified form of a rheologic and antithrombotic agent, poloxamer 188 (188).

"The acquisition of SynthRx will be a transformative event for ADVENTRX, adding another late-stage asset to our pipeline," stated Brian M. Culley, Chief Executive Officer of ADVENTRX. "The all-stock, milestone-based deal structure is a win for ADVENTRX and its stockholders in that it allows us to retain our cash for development activities and, other than a modest upfront equity payment, ensures we pay only as the 188 program achieves success.  I'm pleased that we would have the data from the planned phase 3 study in-hand while having paid less than 25% of the total deal consideration."

"The 188 program will fit well with our existing assets and provide several exciting development opportunities. We would plan to meet with the FDA later this year to reach agreement on a protocol for a pivotal phase 3 study for the treatment of sickle cell crisis in a pediatric population, for which 188 has orphan drug designation. Sickle cell patients are an under-served population suffering from an excruciatingly painful condition with limited palliative options. Beyond sickle cell, we believe 188 has clinical benefits in other acute events related to microvascular-flow abnormalities, such as heart attack, stroke and hemorrhagic shock," Mr. Culley continued.  

Under the terms of the all-stock transaction, SynthRx would become a wholly-owned subsidiary of ADVENTRX in exchange for shares of ADVENTRX common stock representing, in the aggregate, an approximately 4% ownership stake in ADVENTRX.  SynthRx stakeholders also would be entitled to receive additional shares of common stock upon successful achievement of development milestones consisting of dosing the first patient in a phase 3 clinical study, acceptance by the U.S. Food and Drug Administration (FDA) of a New Drug Application (NDA) and approval by the FDA of an NDA.  If all milestones are achieved without reduction, the number of shares issued in connection with the acquisition would, in the aggregate, represent an approximately 40% ownership stake in ADVENTRX (based on currently outstanding shares plus shares issued in connection with the acquisition). Of the total number of shares issuable, more than 75% are based on NDA acceptance and approval.

If ADVENTRX's stockholders do not approve the issuance of the milestone-related shares as required by NYSE Amex listing standards, ADVENTRX expects to pay SynthRx's stakeholders in cash the value of the shares it otherwise would have issued, with the NDA acceptance and NDA approval milestone payments payable based on net sales of 188 and all milestone payments payable in quarterly installments.

SOURCE ADVENTRX Pharmaceuticals, Inc.